Issue #3494404 by just_like_good_vibes, grimreaper: Add "data from a field"...

Issue #3494404 by just_like_good_vibes, grimreaper: Add "data from a field" source to variant prop type

src/Element/ComponentForm.php

@@ -189,6 +189,7 @@ class ComponentForm extends ComponentFormBase {
     $component = static::getComponent($element);
     if (isset($component->metadata->schema['properties']['variant'])) {
       $element['variant_id'] = self::buildComponentVariantSelectorForm(
+        $element,
         $component_id,
         $element['#default_value']['variant_id'] ?? NULL,
       );
@@ -239,6 +240,7 @@ class ComponentForm extends ComponentFormBase {
    *   The variant select.
    */
   private static function buildComponentVariantSelectorForm(
+    array $element,
     string $component_id,
     array|NULL $default_variant_id,
   ): array {
@@ -249,6 +251,10 @@ class ComponentForm extends ComponentFormBase {
       "#component_id" => $component_id,
       "#prop_id" => 'variant',
       '#default_value' => $default_variant_id,
+      '#source_contexts' => $element['#source_contexts'],
+      '#tag_filter' => $element['#tag_filter'],
+      '#ajax_url' => $element['#ajax_url'] ?? NULL,
+      '#wrap' => TRUE,
     ];
   }
 

src/Plugin/UiPatterns/PropType/VariantPropType.php

@@ -17,6 +17,7 @@ use Drupal\ui_patterns\PropTypePluginBase;
   label: new TranslatableMarkup('Variant'),
   description: new TranslatableMarkup('Prop type for component variants.'),
   default_source: 'select',
+  convert_from: ['string'],
   schema: ['type' => ['string'], 'enum' => []],
   priority: 1
 )]
@@ -36,4 +37,13 @@ class VariantPropType extends PropTypePluginBase {
     return static::normalizeEnumValue($value, $enum);
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public static function convertFrom(string $prop_type, mixed $value): mixed {
+    return match ($prop_type) {
+      'string' => (string) $value,
+    };
+  }
+
 }